155378368512 has 90 divisors (see below), whose sum is σ = 448857569888. Its totient is φ = 51792740352.

The previous prime is 155378368463. The next prime is 155378368513. The reversal of 155378368512 is 215863873551.

155378368512 is a `hidden beast` number, since 1 + 5 + 53 + 78 + 3 + 6 + 8 + 512 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155378368513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 379408 + ... + 674319.

Almost surely, 2^155378368512 is an apocalyptic number.

155378368512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155378368512 is an abundant number, since it is smaller than the sum of its proper divisors (293479201376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155378368512 is an equidigital number, since it uses as much as digits as its factorization.

155378368512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053761 (or 1053732 counting only the distinct ones).

The product of its digits is 6048000, while the sum is 54.

The spelling of 155378368512 in words is "one hundred fifty-five billion, three hundred seventy-eight million, three hundred sixty-eight thousand, five hundred twelve".